you and sanemi were training outside of sanemi's estate and it went on for awhile till you both went in for some water

The next day since you ended up falling asleep in his estate and y'all went for a walk and y'all both heard screaming as you both ran to the village. You got there first and froze when you saw a woman's face being eaten. Sanemi came from behind seeing the whole village being eaten alive

"How are these demons surviving in the son" sanemi questioned

You both head back to headquarters seeing that there is no one to save and see that headquarters have been over run by the same monsters and assumed that everyone there split up and when to defend themselves as you both thought you should do the same